The Breech Mechanism, cataloged under National Stock Number 1015-01-437-4253, is classified within Federal Supply Class 1015 (Guns, 75mm Through 125mm) of the Weapons group. The manufacturer of record is Naval Air Warfare Center Aircraft Div. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1015-01-437-4253 |
| Primary Part Number | 1907AS323 |
| Item Name | Breech Mechanism |
| FSC / FSG | 1015 / 10 — Guns, 75mm Through 125mm |
| Manufacturer | Naval Air Warfare Center Aircraft Div |
| Status | ACTIVE |
| Overall Diameter | 0.749 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE |
| Material | STEEL CORROSION RESISTING |
| Thread Size and Series/type Designator | 0.375-16 UNJC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1907AS323 PRIMARY | Naval Air Warfare Center Aircraft Div (USA) |
| Reference | Meaning |
|---|---|
| 1907AS323 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 1015-01-437-4253 is a Breech Mechanism, manufactured by Naval Air Warfare Center Aircraft Div, classified under FSC 1015, Guns, 75mm Through 125mm. Status: active.
NSN 1015-01-437-4253 has 1 manufacturer part number on file: 1907AS323 (Naval Air Warfare Center Aircraft Div).
Key specifications for 1907AS323: Overall Diameter: 0.749 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Overall Length: 3.815 INCHES MINIMUM AND 3.825 INCHES MAXIMUM IN; Surface Treatment: PASSIVATE; Material: STEEL CORROSION RESISTING. 4 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1015-01-437-4253 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.